Be careful what posts you click until this is patched.
EDIT: Clarify, this server I expect is also vulnerable, hence the choice of community.
Lemmy Security Vulnerability: XSS In the Wild
https://sh.itjust.works/post/774797
https://sh.itjust.works/post/774797
Be careful what posts you click until this is patched.
EDIT: Clarify, this server I expect is also vulnerable, hence the choice of community.
8 Comments
br3ad@infosec.pub · 4 pts · 3y
Looks like there are other potential vulnerabilities which makes this issue worse. Possibly CSRF? https://github.com/LemmyNet/lemmy/issues/3505
21trillionsats@infosec.pub · 4 pts · 3y
Hits a 404 now on the link (sh.itjust.works link above), does anyone have a TLDR?
henfredemars@infosec.pub · 8 pts · 3y
Deleting the post might have been damage control because the disclosure was not responsible. Details are in the project GitHub, but basically it's possible to trick Lemmy into serving injected JavaScript by making a post with a crafted URL.
This could allow a user to compromise the accounts of other users if you can get them to click on your post.
udunadan@infosec.pub · 1 pts · 3y
udunadan@infosec.pub · 1 pts · 3y
Thanks for notifying us!